$(document).ready(
		function() {
			var el = $('#nav > ul > li');

			var urls = [ 'http://kukmin.tv/', 
			             'http://www.ddanzi.com/',
			             'http://bunker1.ddanzi.com/', 
			             'http://hani.co.kr/' ];

			el.on({
				mouseover : function() {
					var tg = $(this);
					tg.addClass('on');
				},
				mouseout : function() {
					var tg = $(this);
					tg.removeClass('on');
				},
				click : function(evt) {
					var tg = $(this);
					evt.preventDefault();
					var i = tg.index();					
					var linkURL = urls[i];
					location.href = linkURL;
				}
			});
		});
